Covering for an architectural opening



FIG. 1 is a top-left isometric view of a covering for an architectural opening.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a left side elevation view thereof.

FIG. 4 is a right side elevation view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a rear elevation view thereof.

The broken lines depict features of the covering for an architectural opening that form no part of the claimed design. The covering for an architectural opening is shown with symbolic breaks in its length and width. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM I claim the ornamental design for a covering for an architectural opening, as shown and described. 